67985299536 has 320 divisors, whose sum is σ = 225528231936. Its totient is φ = 17132083200.

The previous prime is 67985299523. The next prime is 67985299541. The reversal of 67985299536 is 63599258976.

67985299536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83828571 + ... + 83829381.

Almost surely, 2^67985299536 is an apocalyptic number.

67985299536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67985299536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112764115968).

67985299536 is an abundant number, since it is smaller than the sum of its proper divisors (157542932400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67985299536 is a wasteful number, since it uses less digits than its factorization.

67985299536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1484 counting only the distinct ones).

The product of its digits is 220449600, while the sum is 69.

The spelling of 67985299536 in words is "sixty-seven billion, nine hundred eighty-five million, two hundred ninety-nine thousand, five hundred thirty-six".